The "no cells found when trying to record" is definitely connected to this problem. I don't know if it is something in Situations or something in org.ofono or something somewhere else that breaks but for some reason Situations just does not get any cell updates or cannot even read current cell when this happens. Would be interesting to know if any other app can read the cell in this case.

You could also try removing actions from your situations one by one to see if any of them is directly or indirectly causing the issue.

When a situation is activated manually, the color of the circle on the left is yellow indicating that it is not turned on by automation. Green means that automation also thinks the situation should be active (and that automation takes over the control of that situation even if it was manually activated).